These non-structural carbohydrates may be transported to the root and stem, thus increasing plant biomass. Overall, these results are consistent with earlier reports (Miglietta et al., 1998; Zhang et al., 2012). Obviously, the rise in atmospheric CO2 results in increase of leaf intercellular CO2 (Ci).Therefore, there was more internal CO2 available to plants grown at elevated CO2 there by enhancing their growth and development(Fig. 3c).